I am a 21 yr old male and recently had a one night stand however i was too drunk to get it up. She seemed very classy and clean. All that happened was I rubbed the tip of my penis on the outside of her vagina as well as 1 maybe 2 full penetration thrusts seeing as i got hard for like 15 seconds. The whole thing was only a couple of minutes long. I did not use a condom and do not know the woman. I have no burning during urination, no abnormal discharges from the penis or anus, no growths or bumps, no pain, everything seems 100% completely normal as it has ever been down there. I however am a chronic worrier and haven't stopped thinking that i may have put my self at risk. I have little to no cash and do not have my insurance card on me and im at school hundreds of miles from home, similarly i dont want to tell my parents about it so i cant get the card to go get tested. Should i be worried? how easy is it catch an std in a situation like this? How at risk am I? She was a classy clean woman.